Lining for non-conducting coverings



(No Modem Gp KELLY No LI Patented 341 6 ATT EST

GEORGE KELLY, OF CHICAGO, ILLINOIS.

LINING FOR NON-CONDUCTING COVERINGS.

'SPECIFICATION forming part of Letters Patent No. 273,688, dated March 6, 1883.

Application tiled December 9, 1882. (No model.)

To all whom it may concern:

Be it known that I, GEORGE KELLY, acitizen of the United States, and a resident of Chicago, in the county of Cool( and State ot' Illinois, have invented a certain new and Improved Lining for Non-Conducting Coverings, of which the following is a specilication.

The present improvement rela-tes to that class ot' non-conducting coverings in which a plastic mass aor cement is used to lorm a nonconductive covering on heating and cooling surl'aces, yet my improvement can be used with very good results with various other forms of' covering.

The objects ot' my improvement are, first, to provide aready and simple meansfor forming dead-air spaces between the surface to be covered and the nonconducting covering; second, to ad'ord facilities for applying the plastic material in a cheap and eliective manner by furnishing projections or ribs for holding such material. I attain these objects by the construction illustrated in the accompanying drawings, in which- Figurel is a transverse section, illustrating two modes of applying my improved Wiregauze lining. Fig. 2 is a detail perspective view of my improved wire-gauze lining provided with longitudinal ribs or projections. Fig. 3 is a similiar view, showing' wire-gauze lining provided with depressions or teats.

Referring to the drawings, A represents the heating-pipe 0r other similar surlace, around which is placed my improved wire-gauze lining B,outside of which is placed the non-c0n ducting material C, which may be formed of plastic cement, 0r ot' any other non-conductive substance found suitable and most convenient.

I form the wire-gauze lining with a series of projections, b, which are integral with the main portion of the lining, being sunk in or from the surface of the same, and in constructing my improved lining the projections b may be continuous, as shown in Fig. 2, or they may be formed into a series of teats or indentations, as shown in Fig. 3. In some cases it may be preferable to use both the ribs and the teats in conjunction with each other.

In practical use the lining may be arranged so that its ribs or teats Wi1lproject outwardly,

in manner indica-ted in the right-hand halt' ot' Fig. 2; but it is preferred to have them project inwardly, as shown in left-hand half of Fig. l, as by such an arrangement the ribs or teats b hold the main portion ot' the lining at adistance from the heating-surface, and so form a dead-air space next to such heating-surface, and between the same and the outer noncon ducting covering, C, by which means the valuable results from such air-space is attained in a very cheap and simple manner by my iinproved construction.

My improved lining is specially adapted to that class of covering known as the plastic cement, the ribs or teat-s b forming very eiieient holding-surfaces i'or the said material, while the wire-gauze itself permits of a very strong and effective ciinching77 of the material through its interstices.

I am aware that prior to myinvention acer-- rugated plate has been interposed between a smoke-pipe and an outer -inclosing-cas ng, so as to permit of a circulation ot' air along said smokepipe, as shown in Patent No. 7l,300, issued November 26, 1867, to J. Harris, for tire-proof packing for smoke and hot-air dues. l therelore do not claim Stich combination, broadly; but

What I do claim, and desire to secure by Letters Patent, is-

l. A lining for non-conducting covering for pipes and analogous purposes, consisting of a sheet ot' wire-gauze having ribs or teats formed in its substance for the purpose of holding and clin'ching the outer plastic non-conducting material.

2. A lining for non-conducting covering for pipes and analogous purposes, formed of wiregauze having inwardly-projecting ribs or teats integral with the main portion of' the lining for the purpose of holding and clinching the outer plastic non-conducting material, and at the same time form a dead-air space between said material and the pipe or other article to which the covering is applied.

GEORGE KELLY.

Witnesses:

RoBT. BURNS, H. D. SMALLEY. 

